Baler connectable to a tractor for providing round bales and method for producing round bales

ABSTRACT

A baler connectable to a tractor for providing round bales comprises: a baling chamber for receiving crops for forming the bale, the baling chamber being supported on a wheel axle; a conveying assembly, including a belt which at least partially delimits the baling chamber for imparting a rotating movement to the crops contained in the baling chamber; a pick-up device, configured for picking-up the crops from a field; a feeding system, configured for feeding the crops to the baling chamber; a binder, configured for binding a formed bale with a fastening element.

TECHNICAL FIELD

This invention relates to a baler connectable to a tractor for providinground bales and to a method for producing round bales in a balerconnected to a tractor.

BACKGROUND ART

Balers are configured to produce a bale over a cycle including a firststep of picking up crops from a field, feeding them to a baling chamberand rotating them in the baling chamber to form a bale, and a secondstep, of binding the formed bale with a fastening element (for instance,a net). Traditionally, during the first step the baler moves forward inthe field, while during the second step the baler stops for a period ofdozens of seconds, until the bale is bound and is therefore dischargedfrom the baler. This stop implies wastes of time and additionallycomplicates the operations of driving the tractor.

Continuous (or non-stop) balers have been developed in order to avoidthe stop of the baler for binding the bale, thus saving time andsimplifying the operations of driving the tractor to which the baler isconnected.

For example, patent documents in the name of the patentee EP2736317B1,EP3005854A1, EP3005855B1, EP305880661, WO2014001330A3, WO2017017201A1disclose continuous fixed round balers including a first (smaller) baleforming chamber and a second (bigger) bale forming chamber, wherein thedimension of the first baling chamber as well as the dimension of thesecond baling chamber is fixed (actually, each bale forming chamberincludes a plurality of fixed rolls arranged all around the chamber).

Generally speaking, fixed balers have several drawbacks: the internaldensity of the formed bale is limited by the fact that at the beginningof the forming process, the crops are not compressed inside the chamber.Further, the final dimension of the bale is fixed, thus it is notadaptable according to user's desires.

Furthermore, patent document EP2196082B1 discloses a continuous roundbaler comprising a pressing chamber and a storage chamber, the storagechamber being arranged upstream of the pressing chamber and having adrivable floor conveyor comprising a plurality of conveying elements;the pressing chamber includes a plurality of pressing rolls having afixed position around the chamber; the baler further includes aplurality of sensors configured to adjust he speed of one or moreconveying elements responsive to an uneven filling of the pressingchamber. In this solution, a high degree of integration of sensors andelectronics increases the final cost and reduces the reliability of themachine; moreover, the maximum bale density achievable is limited by thefact that the baling chamber has fixed dimension.

Variable round balers have been developed in order to increase theflexibility of the machine and keep the bale compressed over all theduration of the bale's forming.

A continuous baler of variable chamber type is described in patentdocuments WO2013157950A1 and US2013/305937, according to the solution ofthis document, the bale reaches its maximum size in a front chamber,afterwards the bale is moved along a substantially horizontal directiontowards a back chamber for the binding net to be applied. A similarsolution is provided by U.S. Pat. No. 4,009,559A. In these solutions,the horizontal moving of the bale to the back chamber requires highcomplexity of the transfer means, implying high power consumption andlong overall baling cycle time. Moreover, the bale, while beingtransferred to the back chamber, has reached its maximum dimension butis not still bound with the net; hence, there is the concern to keep thebale under constant pressure to avoid an instantaneous growth.

Patent document DE102011109893A1 discloses a continuous agriculturalround baler including a semi-variable pressing chamber (delimited by abelt and rollers) and a storage space where the crop is stored beforebeing delivered to the pressing chambers. This baler has as a drawback ahuge dimension (especially in a longitudinal direction) resulting inhigh costs. Another disadvantage is that the material pre-pressed in thestorage space expands again after the transfer into the empty pressingchamber and desired bale densities are not achieved. Further, the cropsneed to travel for a long distance into the storage space (from afeeding rotor up to the pressing chamber), resulting in high energyconsumption.

Another example of a continuous round baler is provided in patentdocument EP2220929A1, that discloses a baler configured to bind a formedbale in a rear area of the baler and, in the meantime, feeding the cropspicked up from the field to a front area of the baler, until the formedbale is discharged; afterwards, the crops stored in the front area aretransferred back to the rear area, and, in the meantime, the feedingmechanism is switched so that the crops picked up from the field are fedto the rear area. This solution has as a drawback the difficulty offilling and emptying the storage means; in fact, the crops that are fedto the storage means tend to form an agglomerate that is difficult torelease and feed to the rear area. Also, the bale formation is notuniform, because in a first step two flows of crops are fed to the bale(one from the pick-up device and one from the storage means), and in asecond step a single flow of crop (from the pick-up device) is fed tothe bale.

Hence, there is a need for a continuous baler in which the supply ofcrops to the bale is uniform and, at the same time, an instantaneousgrowth of the bale before binding is applied is prevented.

An additional issue in variable balers is the positioning of the bindingdevice: while in fixed or in semi-variable balers it is sufficient toinsert the binding material between two of the fixed rollers of thebaling chamber (like in the fixed baler of the above-mentioned documentEP300854A1 or in the semi-variable baler of the above-mentioned documentDE102011109893A1), in variable balers it is difficult to find a room forfeeding the binding material towards the bale. Other examples of balersare provided in patent documents U.S. Pat. No. 6,116,002A and U.S. Pat.No. 4,796,524A.

Another issue in variable and semi-variable balers is that the beltrequires a quite complex design in order to create a passage throughwhich the bale can be discharged. In the above-mentioned documentDE102011109893A1, the whole belt is lifted in order to discharge thebale; this mechanism requires high strengths to lift the whole beltresulting in high complexity of the machine. Patent documentJP2001008525A discloses a round baler including two baling chambers,wherein the crops are fed to the first baling chamber and then theforming bale is transferred to the second baling chamber. The two balingchambers are delimited by two belts. However, the presence of two beltsmakes the compressing of the bale less effective and the machine controlmore complex.

Other examples of continuous round balers are provided in the followingpatent documents: DE3415310A1, EP0115608A1, DE102005020777A1,WO9908505A1, EP2196082B1.

Disclosure of the Invention

Scope of the present invention is to provide a baler connectable to atractor and a method for producing round bales that overcomes at leastone of the aforementioned drawbacks.

This scope is achieved by the baler and the method for producing roundbales in a baler according to the appended claims.

The baler is connected (or connectable) to a tractor.

The method includes a step of picking-up crops from a field, through apick-up device. The picking-up step is performed while the tractoradvances through the field.

The method comprises a step of forming a bale in the baling chamber, byrotating the crops received in the baling chamber through a conveyingassembly.

In an embodiment, the method comprises a step of start a formation of abale in a first part of the baling chamber. Said step of starting theformation of the bale is performed by advancing the crops along afeeding channel from an inlet of the feeding channel facing the pick-updevice to an outlet of the feeding channel. In said step of starting theformation of the bale, the feeding channel has a first orientation sothat the outlet of the feeding channel is opened to the first part ofthe baling chamber. Also, said step of starting the formation of thebale is performed by rotating the crops received in the first part ofthe baling chamber through a conveying assembly. In an embodiment, theconveying assembly includes a belt. Preferably, the rotating of thecrops is also performed through a plurality of starter rollers, arrangedat the outlet of the feeding channel.

The method comprises a step of binding and discharging a former bale,housed in a second part of the baling chamber. The former bale has beenalready formed at this stage. Said binding and discharging of the formerbale is performed during the starting (partial) formation of the bale inthe first part of the baling chamber.

The method comprises, after the former bale has been discharged from thesecond part of the baling chamber, a step of transferring the bale(partially formed in the first part) from the first part to the secondpart of the baling chamber. During the transferring of the bale from thefirst part to the second part of the baling chamber, the feeding channelmoves until the feeding channel has a second orientation (different fromthe first orientation) in which the outlet is opened to the second partof the baling chamber. Also, the starter rollers move in synchronizedfashion with the feeding channel.

Hence, the method includes a step of transferring baling chambercomponents simultaneously with the transfer of the bale, for continuingto form the bale in a different location; in particular, the methodincludes a step of transferring the starter rollers from the firstposition to the second position. Also, the method includes a step oftransferring the feeding channel from the first orientation to thesecond orientation, simultaneously with the transferring of the baleand/or with the transferring of the baling chamber components (e.g.starter rollers). Also, the method includes a step of changing the shapeof the belt to continue to form the bale in the second part of thebaling chamber.

Preferably, the outlet of the feeding channel and the starter rollersmove along a substantially circular trajectory. The bale itself, duringtransferring, follows a substantially circular trajectory; inparticular, the bale follows a substantially circular trajectory from ahigher position to a lower position; in an embodiment, saidsubstantially circular direction is defined about an axis passingthrough a pushing rotor configured to push the crops along the feedingchannel. Hence, the bale travels along an arc of circumference.

The method comprises a step of completing the formation of the bale inthe second part of the baling chamber (after it has been transferredfrom the first part to the second part). The step of completing theformation of the bale is performed by advancing the crops along thefeeding channel, from the inlet to the outlet, and by rotating the cropsreceived in the second part of the baling chamber through the conveyingassembly. During the step of completing the formation of the bale thefeeding channel has its second orientation, so that the outlet is openedto the second part of the baling chamber. Preferably, the rotating ofthe bale is also performed through the plurality of starter rollers,arranged at the outlet of the feeding channel.

Hence, the bale formation is performed firstly in the first part of thebaling chamber, then during the transferring from the first part to thesecond part, then it is completed in the second part. This solutionprovides a non-stop bale which allows to form a uniform bale, byconstantly feeding the crops during the formation of the bale and, alsoto prevent instantaneous expansions of the bale and to ease thetransferring.

Preferably, during the transferring of the bale from the first part tothe second part of the baling chamber, the outlet of the channel and thestarter rollers keep in contact with the bale. Also, the starter rollerscontinuously cooperate with the conveying assembly to rotate the baleduring the transferring. Hence, the bale constantly rotates duringtransferring.

Preferably, during the transferring of the bale from the first part tothe second part of the baling chamber, the feeding channel continuouslyfeeds the crops to the bale while the conveying assembly transfers thebale from the first part to the second part. Hence, the bale constantlygrows during the transferring. In an embodiment, the method comprises astep of binding the bale with a fastening element.

In an embodiment, after the bale is completely formed in the second partof the baling chamber, the feeding channel is moved back to its firstorientation to start to form a new bale in the first part of the balingchamber. While the new bale starts to be formed in the first part, theformed bale housed in the second part of the baling chamber is boundwith a fastening element. Then, while the new bale continues to grow inthe first part, the formed bale is discharged, hence clearing the secondpart. Once the second part has been cleared by discharging the formedbale, the new bale is transferred from the first part to the secondpart, and so on. Also, together with the transferring of the bale, thefeeding channel is moved from its first orientation to its secondorientation, the starter rollers are moved from their first position totheir second position, and the belt is manipulated to change its shapefor continuing to form the bale in said second part of the balingchamber.

Hence, the method provides a non-stop baling process characterized by agood uniformity of crops distribution and a good average pressure in theformed bale. Also, the transferring of the bale is particularly easy.

In an embodiment, in the step of binding, the binder guides thefastening element into the baling chamber along an upwardly trajectoryfrom a first height to a second height, wherein the first height islower than the second height with respect to a ground surface on whichthe baler rests. Preferably, the upwardly trajectory is substantiallyvertical (parallel and directed opposite to the weight force).

In an embodiment, the binder is attached to the frame of the baler. Inan embodiment, the binder is attached to the wheel axle.

This positioning of the binder makes the access to the fastening elementreservoir roll more comfortable; in fact, the user may easily slide outa finished roll and slide in a new roll, without any need for raisingheavy rolls.

Also, thanks to the positioning of the binder under de baler, it ispossible to feed the fastening element to the bale through a passagedefined between a starter roller and a portion of the frame, avoiding tointerrupt the belt elsewhere.

In an embodiment, the binder includes a binding structure. The bindingstructure is tube-shaped. The binding structure includes a cylindricalwall. The binding structure encloses a fastening element reservoir. Thebinding structure has an aperture for releasing the fastening element;the aperture is realized in the cylindrical wall, elongated along anaxis of the cylindrical wall.

In an embodiment, the binding step includes a rotation of the bindingstructure about a rotation axis, from a rest position to a workingposition.

In an embodiment, the binding step includes an advancement of theduckbill towards the baling chamber. Said rotation of the bindingstructure is synchronized with said advancement of the duckbill.

In an embodiment, the binding step includes a rotation of a linkage barabout a pivoting axis, to move the duckbill along a predetermined path,towards the baling chamber. In an embodiment, the linkage bar rotates insynchronized fashion with the rotation of the binding structure.

In an embodiment, the advancement of the duckbill is performed by saidrotation of a linkage bar about the pivoting axis. Preferably, thelinkage bar has a first end, defining the pivoting axis, and a secondend, supporting the duckbill.

Preferably, the pivoting axis is spaced apart from the bindingstructure. In an embodiment, the binder includes a knife attached to thebinding structure. In an embodiment, the knife is oriented tangentiallywith respect to the cylindric wall of the binding structure. Uponrotating the binding structure from the working position to the restposition, the knife intercepts the fastening element, to cut thefastening element.

In an embodiment, the binding step includes, after cutting the fasteningelement, a return step, including a rotation of the binding structurefrom the working position to the rest position.

In an embodiment, in the binding step the binding structure rotates in apositive rotation direction, and in the return step the bindingstructure rotates in a negative rotation direction, opposite to thepositive rotation direction.

In an embodiment, from a point of view on a left-hand side of the baler(with the tongue connectable to the tractor on the left and the tailgateon the right), the positive rotation direction is anticlockwise and thenegative rotation direction is clockwise.

In an embodiment, the rotation of the linkage bar about the pivotingaxis is synchronized with a rotation of the binding structure about therotation axis. In an embodiment, an actuator performs both said pivotingof the linkage bar and said rotation of the binding structure. In anembodiment, the actuator performs the pivoting of the linkage bar, andthe pivoting of the linkage bar drags the rotation of the bindingstructure.

The present description also regards a baler. The baler is connectableto a tractor. The baler is configured for providing round bales.

The baler comprises a frame. The frame is supported on a wheel axle.

The frame (or the baler) includes a baling chamber, configured forreceiving crops for forming a bale. The baling chamber includes a firstpart, for housing a first amount of crops, and a second part, for(simultaneously) housing a second amount of crops. The term “amount ofcrops” means, within the present description, a partially formed bale(during its formation process), or a formed bale (after its formationprocess). In an embodiment, the first part is configured for starting aformation of the bale; the second part is configured for complete theformation of the bale.

In another embodiment, the baling chamber includes a single chamber, forreceiving the crops and forming the bale.

The baler comprises a conveying assembly. The conveying assembly isconfigured for imparting a first rotating movement to the first amountof crops, and, at the same time, a second rotating movement to thesecond amount of crops.

The baler comprises a pick-up device. The pick-up device is configuredfor picking-up the crops from a field.

The baler comprises a feeding system. The feeding system is configuredto feed the crops from the pick-up device to the baling chamber.

The feeding system includes a feeding channel. The feeding channel istraversed by the crops being fed to the baling chamber. The feedingchannel has an inlet, for receiving the crops from the pick-up device,and an outlet, opened to the baling chamber for feeding the crops to thebaling chamber.

The feeding system is movable (or switchable) between a firstconfiguration and a second configuration. In the first configuration ofthe feeding system, the feeding channel has a first orientation. Thefeeding channel, in its first orientation, has the outlet opened to thefirst part of the baling chamber. In the second configuration of thefeeding system, the feeding channel has a second orientation. The secondorientation is different from the first orientation. The feedingchannel, in its second orientation, has the outlet opened to the secondpart of the baling chamber. In both the first orientation and the secondorientation, the inlet of the feeding channel faces the pick-up device.

The feeding channel is configured to selectively feed the crops to thefirst part of the baling chamber or to the second part of the balingchamber.

Hence, the feeding system in its first configuration is configured tofeed the crops picked up by the pick-up device to the first part of thebaling chamber; the feeding system in its second configuration isconfigured to feed the crops picked up by the pick-up device to thesecond part of the baling chamber.

In an embodiment, the feeding system further includes a plurality ofstarter rollers. The starter rollers of said plurality are arranged atthe outlet of the feeding channel. Preferably, a first part of saidplurality of starter rollers is arranged at a lower side of the outletof the feeding channel, and a second part of said plurality of starterrollers is arranged at an upper side of the outlet of the feedingchannel. The starter rollers of said plurality are configured tocooperate with the conveying assembly to impart the rotating movement tothe crops. Specifically, when the feeding system is in its firstconfiguration, the starter rollers cooperate with the conveying assemblyto impart the first rotating movement to the first amount of crops, and,when the feeding system is in its second configuration, the starterrollers cooperate with the conveying assembly to impart the secondrotating movement to the second amount of crops.

In an embodiment, the starter rollers of said plurality are configuredto cooperate with the feeding channel to feed the crops into the balingchamber. Specifically, when the feeding system is in its firstconfiguration, the starter rollers are configured to cooperate with thefeeding channel to feed the crops to the first part of the balingchamber; when the feeding system is in its second configuration, thestarter rollers are configured to cooperate with the feeding channel tofeed the crops to the second part of the baling chamber.

In an embodiment, the starter rollers of said plurality being movable insynchronized fashion with the feeding channel between a first positionand a second position. In the first position, the starter rollers (atleast partially) delimit the first part of the baling chamber to rotatethe first amount of crops. In the second position, the starter rollers(at least partially) delimit the second part of the baling chamber torotate the second amount of crops. In the first configuration of thefeeding system, the starter rollers of said plurality are in the firstposition. In the second configuration of the feeding system, the starterrollers of said plurality are in the second position.

So, when the bale (or amount of crops) has reached a certain dimensionin the first part and is moved to the second part, the feeding channelis moved in the second position in order to keep feeding the crops tothe bale. This allows to never stop the advancing of the crops throughthe feeding channel, during the formation of the bale.

In an embodiment, the outlet of the feeding channel defines in thebaling chamber an opening through which the crops are fed to the balingchamber. The starter rollers of said plurality delimit said opening. Theopening is movable in synchronized fashion with the feeding channel andwith the starter rollers, so that, in the first configuration of thefeeding channel, the opening is defined in the first part of the balingchamber and, in the second configuration of the feeding channel, theopening is defined in the second part of the baling chamber.

The conveying assembly is configured to transfer the first amount ofcrops from the first part of the baling chamber to the second part ofthe baling chamber. The conveying assembly is configured to move insynchronized fashion with the feeding system to transfer the firstamount of crops from the first part to the second part simultaneouslywith the movement of the feeding channel from the first orientation tothe second orientation.

The plurality of starter rollers is configured to keep in contact withthe first amount of crops while the conveying assembly transfers thefirst amount of crops from the first part of the baling chamber to thesecond part of the baling chamber.

The feeding channel is configured to continuously feed the crops to thebaling chamber (to grow the first amount of crops being transferred)while the conveying assembly transfers the first amount of crops fromthe first part of the baling chamber to the second part of the balingchamber.

In an embodiment, the conveying assembly includes a belt. Hence, in anembodiment, the baler is a variable-chamber baler. In an embodiment, theconveying assembly includes a single belt. In an embodiment, theconveying assembly includes two or more belts.

In an embodiment, the belt partially delimits the baling chamber. In anembodiment, the belt partially delimits both the first part and thesecond part of the baling chamber. The belt is configured to impart thefirst rotating movement to the first amount of crops housed in the firstpart and a second rotating movement to the second amount of crops.

In an embodiment, the conveying assembly includes a plurality of beltrollers, supporting and rotating the belt.

In an embodiment, in the first configuration of the feeding system, thestarter rollers cooperate with the belt to delimit the first part of thebaling chamber, and, in the second configuration of the feeding system,the starter rollers cooperate with the belt to delimit the second partof the baling chamber.

In an embodiment, the conveying assembly includes one or more arms. Saidone or more arms are configured to move the belt rollers (or a groupthereof). At least some belt rollers of said plurality of belt rollersare movable, in synchronized fashion with the feeding system, throughsaid one or more arms, to move the belt.

In an embodiment, the conveying assembly (or said one or more arms)includes a guide arm. The plurality of belt rollers includes a guide armroller mounted on the guide arm (at an extremity thereof). The guide armis movable between a raised position, in which the guide arm roller isspaced apart from the belt, and a lowered position, in which the guidearm roller contacts the belt. When the feeding system is in the firstconfiguration, the guide arm is in the lowered position (to keep thebelt stretched on the first part of the baling chamber). When thefeeding system is in the second configuration, the guide arm is in theraised position. Specifically, when the feeding system starts to switchfrom the first configuration to the second configuration, the guide armraises up to let the bale moving to the second part.

In an embodiment, the conveying assembly (or said one or more arms)includes a rotating arm. The plurality of belt rollers includes arotating arm roller, mounted on the rotating arm (at an extremitythereof). The rotating arm is rotatable about a respective axis betweena rest position in which the rotating arm roller is spaced apart fromthe belt, and a working position in which the rotating arm rollercontacts the belt. When the feeding system is in the firstconfiguration, the rotating arm is in the rest position. Also, when thefeeding system is in the second configuration, the rotating arm is inthe rest position. During the moving of the feeding system from thefirst configuration to the second configuration (hence, during thetransferring of the bale or amount of crops), the rotating arm is in theworking position, in order to control and guide the belt close to thebale's circumference during the transfer of the bale or amount of crops(in order to keep the bale compressed).

In another embodiment, the conveying assembly includes a plurality offixed rollers, configured to rotate the crops. In particular, in thisembodiment, a first group of the fixed rollers partially delimits thefirst part of the baling chamber and a second group of the fixed rollerspartially delimits the second part of the baling chamber. Hence, in anembodiment, the baler is a fixed-chamber baler. Preferably, the secondpart of the baling chamber is provided in a rear area of the balingchamber; the first part of the baling chamber is provided in a frontarea of the baling chamber. The front area is interposed between thetractor and the rear area.

In an embodiment, the feeding system includes a starter rollersstructure supporting the starter rollers. The starter rollers arerotatably mounted on the starter rollers structure. The starter rollersstructure is rotatable about a respective rotation axis to move thestarter rollers between the first position and the second position. So,the starter rollers are movable along a circular trajectory.

When the feeding system moves from the first configuration to the secondconfiguration, the starter roller structure rotates in a clockwisedirection (defined by seeing the baler in a lateral view with thetractor on the left). Hence, the feeding channel rotates in theclockwise direction, from its first orientation to its secondorientation. Similarly, the partially formed bale rotates in theclockwise direction.

When the feeding system moves from the second configuration to the firstconfiguration, the starter roller structure rotates in an anticlockwisedirection (defined by seeing the baler in a lateral view with thetractor on the left).

In an embodiment, the feeding system includes a pushing rotor. Thepushing rotor is configured to advance the crops along the feedingchannel (towards the outlet). The pushing rotor is rotatable about arespective rotation axis to advance the crops. In an embodiment, therotation axis of the starter rollers structure is superposed (hence,coincides) with the rotation axis of the pushing rotor. However, whilethe pushing rotor continuously rotates to advance the crops, the starterroller structure only rotates to switch the feeding system from thefirst configuration to the second configuration, and vice versa.

In an embodiment, the feeding system includes a rotatable wall.Preferably, the rotatable wall is arranged at a lower side of thefeeding channel. The rotatable wall is rotatable to move between a restposition and a working position. Preferably, the rotatable wall isrotatable about a rotation axis parallel to a direction of developmentof the feeding rollers. In the rest position, the rotatable wall restposition extends out of the feeding channel (being in its secondposition). In the working position, the rotatable wall is elongatedalong the feeding channel to partially delimit the feeding channel(being in its first position). In particular, the rotatable wall in theworking position defines a lower portion of the feeding channel. Thisrotatable wall allows the feeding channel to vary its length,accordingly to the configuration: in the first configuration of thefeeding system, the channel has a greater length, and, in the secondconfiguration of the feeding system, the channel has a smaller length.

In an embodiment, the baler comprises a binding unit, configured to bindthe bale with a fastening element. In an embodiment, the binding unit isconfigured to feed the fastening element to the second part of thebaling chamber. So, while a formed bale is in the second part for beingbind, a new bale may start its formation in the first part.

In an embodiment, the baler comprises a bottom roller. In an embodiment,the bottom roller is fixed to the frame.

In an embodiment, the binding unit is configured to feed the fasteningelement to the second part of the baling chamber through a passagedefined between a starter roller of said plurality of starter rollersand the bottom roller.

In an embodiment, the binder is located at a lower height than thebaling chamber, with respect to a ground surface on which the balerrests, and is configured for guiding the fastening element into thebaling chamber along an upwardly trajectory.

In an embodiment (wherein the baling chamber includes a first part and asecond part) the binder is located below the second part; preferably thebinder is interposed between the second part and the ground surface.

In an embodiment, the binder is located between the feeding system andthe wheel axle, along a horizontal direction parallel to the groundsurface.

In an embodiment, the binder includes a binding structure. The bindingstructure is tube-shaped. The binding structure encloses a fasteningelement reservoir and has an aperture for releasing the fasteningelement. The aperture is elongated along the direction of development ofthe tube-shaped binding structure.

In an embodiment, the binder includes a duckbill. The duckbill isconfigured to pull the fastening element out of the aperture and guideit to the baling chamber.

In an embodiment, the binding structure is rotatable, about a rotationaxis, between a rest position and a working position. In the restposition of the binding structure, the aperture is in a first positionand, in the working position of the binding structure, the aperture isin a second position for feeding the fastening element to the balingchamber.

In an embodiment, the binder includes a knife. The knife is attached tothe binding structure and is configured to intercept and cut thefastening element upon rotating the binding structure from the workingposition to the rest position. In an embodiment, the binder includes alinkage bar. Preferably, the binder includes a pair of linkage bars, atopposite ends of the tube-shaped binding structure. The linkage bar ispivotable (or rotatable) about a pivoting axis to move the duckbillalong a predetermined path towards the baling chamber. Preferably, thelinkage bar is pivotable in synchronized fashion with the bindingstructure.

Preferably, the linkage bar is arc shaped between a first end and asecond end. The pivoting axis is located at the first end. The duckbillis attached to the second end.

In an embodiment, the binder an actuator, configured to simultaneouslyactuate both a pivoting of the linkage bar about the pivoting axis and arotation of the binding structure between the rest position and theworking position.

In an embodiment, the actuator is configured to performs a pivoting ofthe linkage bar. The linkage bar pivoting is connected to the bindingstructure so that the linkage bar pivoting drags a rotation of thebinding structure. In an embodiment, the connection between the linkagebar and the binding structure may be provided by the fastening elementitself, which is enclosed into the binding structure and has a free endattached to the duckbill. In another embodiment, the linkage bar may beconnected to the binding structure through a connector.

BRIEF DESCRIPTION OF DRAWINGS

This and other features of the invention will become more apparent fromthe following detailed description of a preferred, non-limiting exampleembodiment of it, with reference to the accompanying drawings, in which:

FIG. 1 illustrates a baler according to the present description, whilestarting to form a former bale in a second part of the baling chamber,by a feeding system being in a second configuration;

FIG. 2 illustrates the baler of FIG. 1, while starting to bind theformer bale housed in the second part of the baling chamber, the feedingsystem still being in the second configuration;

FIG. 3 illustrates the baler of FIG. 1, while binding the former balehoused in the second part of the baling chamber and moving the feedingsystem from the second configuration to the first configuration;

FIGS. 4, 5 and 6 illustrate the baler of FIG. 1, while starting to forma bale in the first part of the baling chamber, by the feeding systembeing in the first configuration;

FIG. 7 illustrates the baler of FIG. 1, while continuing to form thebale in the first part of the baling chamber and discharging the formerbale;

FIG. 8 illustrates the baler of FIG. 1, while transferring the bale fromthe first part of the baling chamber to the second part of the balingchamber, and simultaneously moving the feeding system from the firstconfiguration to the second configuration;

FIG. 9 illustrates the baler of FIG. 1, while continuing forming thebale in the second part of the baling chamber, by the feeding systembeing in the second configuration;

FIG. 10 illustrates a binder of the baler of FIG. 1 in a rest position;

FIG. 11 illustrates the binder of FIG. 8 in a working position.

DETAILED DESCRIPTION OF PREFERRED EMB0DIMENTS OF THE INVENTION

With reference to the accompanying drawings, the numeral 1 denotes abaler, according to the present disclosure.

The baler 1 includes a tongue 10 connectable to a tractor. The tongue 10is configured to allow the tractor to tow the baler 1.

The baler 1 comprises a drive shaft. The drive shaft, in an embodiment,is a cardan shaft. The baler 1 includes a gearbox 101. The drive shaftis configured to transmit mechanical rotation from a motor of thetractor to the baler 1, through the gearbox 101.

The baler 1 comprises a frame 100 including a baling chamber 2. Theframe 100 surrounds the baling chamber 2. The baling chamber includes afirst part 21 and a second part 22. The baling chamber 2 is configuredfor receiving crops to form a bale B.

The baler 1 comprises a wheel axle 23; the frame 100 is supported on thewheel axle 23.

The baler 1 comprises a conveying assembly 3. The conveying assembly 3includes a belt 300.

The conveying assembly 3 includes a tensioner 301 and a plurality oftensioner rollers 302 mounted on the tensioner 301. The tensionerrollers 302 are configured to support the belt 300. The belt 300 iswrapped around the tensioner rollers 302. In an embodiment, thetensioner rollers 302 are idle. Hence, the movement of belt 300 makesthe tensioner rollers 302 rotate. The conveying assembly 3 includes atensioner actuator 3011. In an embodiment, the tensioner actuator 3011is a cylinder-piston actuator. The tensioner actuator 3011 as a firstend (pivotably) connected to the frame 100 and a second end (pivotably)connected the tensioner 301. Hence, the tensioner 301, actuated by thetensioner actuator 3011, is configured to manipulate the belt 300.

The conveying assembly 3 includes a plurality of driven rollers 303. Inan embodiment, the driven rollers 303 are mounted on the frame 100. Thebelt 300 is wrapped around said driven rollers 303. The driven rollers303 transmit mechanical movement to the belt 300.

The baler 1 comprises a tailgate 7. The tailgate 7 is connected to theframe 100. The tailgate 7 is movable between a closed position and anopen position. The tailgate 7 in the open position is configured fordischarging a formed and bound bale.

The baler 1 comprises a tailgate actuator 701. The tailgate actuator 401in an embodiment is a cylinder-piston actuator. The tailgate actuator401 has a first end connected to the frame 100 and a second endconnected to the tailgate 7.

The tailgate actuator 701 is configured to move the tailgate 7 betweenthe closed position and the open position.

The conveying assembly 3 includes a rotating arm 304. The rotating arm304 is rotatable about a pivot 702. In an embodiment, said pivot 702 isprovided on the tailgate 7; said pivot 702 is movable integrally withthe tailgate 7. The conveying assembly 3 includes a rotating armactuator 3041. The rotating arm actuator 3041, in an embodiment, is acylinder-piston actuator. The rotating arm actuator 3041 has a first end(pivotably) connected to the tailgate 7 and a second end (pivotably)connected to the rotating arm 304. The rotating arm is rotatable aboutthe pivot 702 between a rest position and a working position. Therotating arm actuator 3041 is configured to move the rotating arm 304between the rest position and the working position. The conveyingassembly 3 includes a rotating arm roller 305. The rotating arm roller305 is mounted on the rotating arm 304, preferably at an extremitythereof. In an embodiment, the rotating arm roller 305 is idle. When therotating arm 304 is in the rest position, the rotating arm roller 305 ispositioned along a back wall of the tailgate 7 and does not interferewith the belt 300; when the rotating arm 304 is in the working position,the rotating arm roller 305 contacts and stretches the belt 300.

The conveying assembly 3 includes a plurality of tailgate rollers 306,306′, 306″, connected to (or mounted on) the tailgate 7. Said tailgaterollers 306, 306′, 306″ are idle. The belt 300 is wrapped around saidtailgate rollers 306, 306′, 306″ and is stretched by them.

The conveying assembly 3 includes a guide arm 309. The conveyingassembly 3 includes a guide arm roller 310. The guide arm roller 310 isconnected to the guide arm 309, preferably at an extremity thereof. Theguide arm 309 is movable between a raised position, in which the guidearm roller 310 is spaced apart from the belt 300, and a loweredposition, in which the guide arm roller 310 contacts the belt 300 (tostretch it).

The conveying assembly 3 includes a plurality of frame 100 rollers 307connected to the frame 100 and configured to stretch and manipulate thebelt 300.

The conveying assembly 3 includes a further roller 308 configured tostretch and manipulate the belt 300.

Said tensioner rollers 302, driven rollers 303, rotating arm roller 305,tailgate rollers 306, 306′, 306″, guide arm roller 310, roller 308attached to the feeding structure form a plurality of belt rollers,configured to support, stretch and manipulate the belt 300.

The baler 1 comprises a pick-up device 5. The pick-up device isconfigured for picking up the crops from a field. The pick-up device 5includes a pick-up roll 51.

The baler 1 comprises a feeding system 4. The feeding system 4 isconfigured to guide the crops from the pick-up device 5 to the balingchamber 2. The feeding system 4 includes a pushing rotor 401, rotatableabout a rotation axis 401A. The feeding system 4 includes a feedingchannel 402. The feeding channel 402 extends between an inlet 402A andan outlet 402B. The inlet 402A faces the pick-up device 5. The outlet402B defines an opening in the baling chamber 2. The pushing rotor 401is positioned along the feeding channel 402, downstream of the inlet402A and upstream of the outlet 402B. The inlet 402A is at a lower levelwith respect to the outlet 40213, the pushing rotor 401, by rotatingabout its axis 401A, pushes the crops up from the inlet 402A to theoutlet 402B.

The feeding system 4 includes a drop floor device 403, defining a(portion of) bottom side of the feeding channel 402. The drop floordevice 403 is positioned between the inlet 402A and the outlet 402B ofthe feeding channel 402. The pushing rotor 401 is positioned above saiddrop floor device 403.

The feeding system 4 includes a plurality of starter rollers 404, 404′,404″.

The starter rollers 404, 404′, 404″ are driven rollers. Said pluralityof starter rollers includes at least a starter roller 404 positioned ata bottom side of the feeding channel 402 and at least a starter roller404′, 404″ positioned at a top side of the feeding channel 402.

In an embodiment, a (or at least one) starter roller 404″ of saidplurality is configured to rotate the bale B when the feeding system 4is in its second configuration and to drive the belt 300 when thefeeding system 4 is in its first second configuration.

The plurality of starter rollers 404, 404′, 404″ is mounted on a starterroller structure 4043. The starter roller structure 4043 is rotatableabout an axis which preferably coincides with the axis 401A of rotationof the pushing rotor 401.

The frame 100 defines a starter roller guide 4041 along which aperiphery of the starter roller structure 4043 moves.

The feeding system 4 includes a starter roller actuator 4042 configuredto actuate the rotation of the starter roller structure 4043. In anembodiment, the starter roller actuator 4042 is a cylinder pistonactuator; the starter roller actuator 4042 has a first end (pivotably)connected to the frame 100 and a second end (pivotably) connected to thestarter roller structure 4043.

The roller 308 configured to manipulate the belt is mounted (attached)to the starter roller actuator 4042.

The feeding system 4 includes a rotatable wall 405. The rotatable wall405 is rotatable about a respective axis between a working position, inwhich it defines a portion of the bottom side of the feeding channel402, and a rest position, in which it is spaced apart from the feedingchannel 402.

The feeding system 4 is movable between a first configuration and asecond configuration.

In the first configuration of the feeding system 4, the feeding channel402 has a first orientation, so that the outlet 402B is opened towardsthe first part 21 of the baling chamber 2.

In the first configuration of the feeding system 4, the starter rollers404, 404′, 404″ delimit the first part 21 of the baling chamber 2, torotate crops housed therein.

In the second configuration of the feeding system 4, the feeding channel402 has a second orientation, so that the outlet 402B is opened towardsthe second part 22 of the baling chamber 2.

In the second configuration of the feeding system 4, the starter rollers404, 404′, 404″ delimit the second part 22 of the baling chamber 2, torotate crops housed therein.

The feeding system 4 is movable from the first configuration to thesecond configuration (and vice versa) upon rotation of the starterroller structure 4043 about its rotation axis and, preferably, uponrotation of the rotatable wall 405 from its working position to its restposition (and vice versa).

FIGS. 3, 4, 5, 6 and 7 provides examples of the feeding system 4 beingin the first configuration. FIGS. 1, 2 and 9 provides examples of thefeeding system 4 being in the second configuration. FIG. 8 provides anexample of the feeding system 4 moving from the first configuration tothe second configuration.

The conveying assembly 3 is movable together (in synchronized fashion)with the feeding system 4.

In particular, when the feeding system 4 is in its first configuration,the guide arm 309 is in its lowered position; in this position, theguide arm roller 310 stretches the belt 300 around the crops containedin the first part 21. When the feeding system 4 is in its secondconfiguration, the guide arm 309 is in its raised position.

When the feeding system 4 is in its first configuration, or in itssecond configuration, the rotating arm 304 is in its rest position. Whenthe feeding system 4 is moving from the first configuration to thesecond configuration, the rotating arm 304 is activated (thus is in itsworking position), to allow a guided transfer of the crops from thefirst part to the second part.

The baler 1 comprises a binder 6. The binder 6 is configured to bind aformed bale B with a fastening element 60. The fastening element 60 maybe, for example, a net or a plastic film.

The binder 6 includes a fastening element reservoir 600. The fasteningelement reservoir 600 includes a roll 61 and an amount of fasteningelement 60, wrapped on the roll 61.

The binder 6 (and/or the fastening element reservoir 600) is positionedunder the baling chamber 2; in particular, the binder 6 is positionedunder the second part 22 of the baling chamber 2.

The baler 1 lays on a ground surface G. The ground surface G is definedby the field from which the crops are picked up.

The binder 6 is positioned between the ground surface G and the balingchamber 2 (in particular, the second part 22 of the baling chamber 2).

The binder 6 is configured for guiding the fastening element 60 into thebaling chamber 2 along an upwardly trajectory. The upwardly trajectoryis substantially elongated along a vertical direction V, or has at leasta vertical component.

The binder 6 is located between the feeding system 4 and the wheel axle23, along a horizontal direction H parallel to the ground surface G.

The binder 6, in one example, is separated from the tailgate 7; hence,the binder 6 remains stationary, during the movement of the tailgate 7.The tailgate 7 is movable from a closed position (to delimit the bailingchamber) and an open position, to allow a discharging of the bale. Thetailgate 7 has a first end, hinged to the frame, and a second, free end;the binder 6, in one example, is located at a first distance from thesecond end of the tailgate 7, in the closed position of the tailgate 7,and is located at a second distance from the second end of the tailgate7, in the open position of the tailgate 7, the second distance beinglarger than the first distance.

The baler 1 includes a bottom roll 609 connected to the frame 100.

The bottom roll 609 is preferably driven. The bottom roll 609 isconfigured to receive the fastening element 60 from the binder 6 and toguide it towards the bale B. The bottom roll 609 has a rough surface, inorder to grasp the fastening element 60. Preferably, the bottom roll 609is larger than the bale B, in order to guide the fastening element 60over the edges of the bale B.

The binder 6 is configured to insert the fastening element into the(second part 22 of) baling chamber 2 through a passage defined betweenthe bottom roll 609 and one of the starter rollers (in particular, thestarter roller 404, positioned on a bottom side of the feeding channel402).

The binder 6 includes a binding structure 601. The binding structure 601includes a tube surrounding the fastening element reservoir 600.

The binding structure 601 has (or defines) an aperture 601B forreleasing the fastening element 60 when it is unrolled from thereservoir 600.

The binder 6 includes a duckbill 602, configured to pull the fasteningelement 60 out of the aperture 601B and feed it to the baling chamber 2.

The binder 6 includes a linkage bar 604. The linkage bar 604 ispivotable about a pivoting axis 604A. The duckbill 602 is connected tothe linkage bar 604. Hence, the linkage bar 604, by pivoting (orrotating) about the pivoting axis 604A, guides the duckbill 602 along apredetermined path towards the baling chamber 2 (or the second part 22thereof, or towards the bottom roller 609). Said predetermined path ofthe duckbill 602 towards the baling chamber 2 is directed upwards.

In an embodiment, the linkage bar 604 is arc-shaped. The linkage bar 604has a first end and a second end, opposite to the first end. Thepivoting axis 604A is at the first end of the linkage bar 604. Theduckbill 602 is attached to the second end of the linkage bar 604.

Preferably, the binder includes two linkage bars 604, one at a firstside of the baler 1 and one at a second side of the baler 1.

The linkage bar 604 includes a linkage bar roller 605 positioned betweenthe first end and the second end. The linkage bar roller 605 is idle.The linkage bar roller 605 is configured to guide the fastening element60 out of the aperture 601B, towards the duckbill 602.

The binding structure 601 includes a binder guide roller 607. The binderguide roller 607 is idle. The binder guide roller 607 is positioned atthe aperture 601B of the binding structure 601. The binder guide roller607 is configured to guide the fastening element 60 from the reservoir600 to the linkage bar roller 605. The binding structure 601 isrotatable about a rotation axis 601A. In an embodiment, the rotationaxis 601A is a central axis of the binding structure 601. The rotationaxis 601A of the binding structure 601 is spaced apart from the rotationaxis 604A of the linkage bar 604. The rotation axis 601A of the bindingstructure 601 is parallel to the rotation axis 604A of the linkage bar604. The binding structure 601 is rotatable between a rest position anda working position, in synchronized fashion with the linkage bar 604.

When the binding structure 601 is in the rest position, the aperture601B is in a first position and the linkage bar 604 is in a loweredposition. When the binding structure 601 is in the working position, theaperture 601B is in a second position, different from the firstposition, and the linkage bar 604 is in a raised position. When thelinkage bar 604 in the raised position, the duckbill 602 extends towardsthe baling chamber 2.

The binder 6 includes a binder actuator 608. The binder actuator 608 isconfigured to drive the linkage bar 604 to pivot from the loweredposition to the raised position (and vice versa). The binding structure601 is free to rotate, so that the fastening element 60, pulled out ofthe aperture 6041B by the duckbill 602 (upon pivoting the linkage bar604), makes the binding structure 601 rotate. Hence, the bindingstructure 601 is dragged from the rest position to the working position(and vice versa), by the linkage bar 604 pivoting. The binder actuator608 is then configured to move both the linkage bar 604 and the bindingstructure 601.

The binder 6 includes a knife 603. The knife 603 is attached to anexternal surface of the binding structure 601. The knife 603 isconfigured to intercept and cut the fastening element 60 in the workingposition of the binding structure 601. The knife 603, being attached tothe binding structure 601, is movable together with the bindingstructure 601.

The binder 6 includes a braking mechanism 606. The braking mechanism 606is positioned within the binding structure 601. The braking mechanism606 includes a roll configured to keep in contact with the reservoir 600(for example by means of a spring) to control and brake the unrolling ofthe fastening element 60.

FIG. 10 illustrates an example of the binding structure 601 in the restposition. FIG. 11 illustrates an example of the binding structure 601 inthe working position.

The present disclosure also concerns a method for providing round balesin a baler 1. The method defines a method for operating the baler 1.

The method comprises a step of starting to operate the baler. The stepof starting to operate the baler comprises forming a former (first) baleB0; the former bale B0 is entirely formed in the second part 22 of thebaling chamber 2 of the baler 1. The second part 22 is located on therear of the baling chamber 2. During all the period of formating of theformer bale B0, the feeding system 4 is in its second configuration,with the feeding channel 402 in its second orientation, with its outlet402B opened to the second part 22 of the baling chamber 2. Hence, theformer bale B0 is formed by feeding crops from the pick-up device 5 tothe second part 22 of the baling chamber 2.

During the formation of the former bale B0, the guide arm 309 of theconveying assembly 3 is in its raised position, in which it does notstretch the belt 300. Also, the rotating arm 304 is in its restposition, extending along a rear wall of the tailgate 7.

When the bale B0 has reached its final dimension, the feeding system 4is switched to its first configuration, in which the feeding channel 402is in its first orientation, with its outlet 402B opened to the firstpart 21 of the baling chamber 2. The feeding system 4 is moved from thesecond configuration to the first configuration by rotating the starterrollers structure 4043, by means of the actuator 4042. Specifically,from a lateral point of view on a left-hand side of the baler (with thetongue 10 connectable to the tractor on the left and the tailgate 7 onthe right), the starter rollers structure 4043 rotates in ananticlockwise direction.

Simultaneously with the rotation of the starter rollers structure 4043,the guide arm 309 is moved to its lowered position, by means of theguide arm actuator 3011. So, the guide arm roller 310 pushed against thebelt 300.

So, the method comprises a step of starting to form a (second) bale B inthe first part 21 of the baling chamber 2. In fact, the feeding system 4in the first configuration feeds the crops to the first part 21 to thebaling chamber 2. The method includes a step of binding the former baleB0. The method includes a step of discharging the former bale B0.

While the bale B starts to be formed in the first part 21 of the balingchamber 2, the former bale B0, housed in the second part 22, is boundwith the fastening element 60. After the fastening element 60 has beenapplied, the bale B is discharged, by opening the tailgate 7.

When the bale B has reached a predetermined dimension (smaller than itsfinal dimension), the method comprises a step of transferring the bale Bfrom the first part 21 to the second part 22 of the baling chamber 2.Simultaneously with the transfer of the bale B, the feeding system 4 ismoved from the first configuration to the second configuration. Duringthe transferring, the feeding channel continuously varies itsorientation from the first orientation to the second orientation.

The feeding system 4 is moved from the first configuration to the secondconfiguration by rotating the starter rollers structure 4043, by meansof the actuator 4042. Specifically, from a lateral point of view on aleft-hand side of the baler (with the tongue 10 connectable to thetractor on the left and the tailgate 7 on the right), the starterrollers structure 4043 rotates in a clockwise direction. Hence, duringthe transfer of the bale B, the outlet 402B of the feeding channel 402and the starter rollers 404, 404′ remain in contact with the bale B. So,the crops are continuously fed to the bale B while it is moved to thesecond part 22 of the baling chamber 2. During the transfer of the baleB, the rotating arm 304 is positioned (by means of the actuator 3041) inits working position, to stretch the belt 300 around the bale B. Also,during the transfer of the bale B, the guide arm 309 is put in itsraised position to allow the bale B passing to the second part 22 of thebaler 2.

Then, the method comprises a step of completing the formation of thebale B in the second part 22 of the baling chamber 2.

After the bale B has reached its final dimension, the feeding system 4is moved back to the second configuration, to start to form a new(third) bale in the first part 21 of the baling chamber 2.

The method includes a step of binding the bale B. The method includes astep of discharging the bale B.

While forming the new (third) bale in the first part 21 of the balingchamber 2, the bale B is bound with the fastening element 60 and, then,discharged.

The step of binding includes guiding a fastening element 60 into thebaling chamber along an upwardly trajectory (having at least a verticalcomponent).

The step of binding includes rotating a linkage bar 604 connected to aduckbill 602 along an upwardly trajectory, from a lowered position to araised position. In the raised position, the duckbill 602 feeds thefastening element 60 to the baling chamber (or to the bottom roller609). The step of binding includes rotating a binding structure 601 froma rest position to a working position. The rotation of the linkage bar604 is performed by an actuator 608. The rotation of the bindingstructure 601 is synchronized with the rotation of the linkage bar 604.In an embodiment, the duckbill 602 upon rotating the linkage bar 604stretches the fastening element 60so to unroll the fastening element 60from the reservoir 600 and to make the binding structure 601 rotate.

In the step of binding (or at the start thereof), from a point of viewon a left-hand side of the baler (with the tongue 10 connectable to thetractor on the left and the tailgate 7 on the right), the linkage bar604 rotates in an anticlockwise direction, from the lowered position tothe raised position. Also, the binding structure 601 rotates in ananticlockwise direction, from the rest position to the working position.

During the step of binding, the linkage bar 604 remains in its raisedposition and the binding structure 601 remains in its working position.During the step of binding, the rotation of the bottom roller 609,combined with the rotation of the bale B which is being wrapped, makesthe fastening element 60 unroll from the reservoir 600.

After the binding of the bale has been completed, the method includes astep of return. In the step of return, the actuator 608 makes thelinkage bar 604 return from the raised position to the lowered position.Simultaneously, the binding structure 601 returns from the workingposition to the rest position.

In the step of return, from a point of view on a left-hand side of thebaler (with the tongue 10 connectable to the tractor on the left and thetailgate 7 on the right), the linkage bar 604 rotates in a clockwisedirection, from the lowered position to the raised position. Also, thebinding structure 601 rotates in a clockwise direction, from the restposition to the working position.

1-17. (canceled)
 18. A baler connectable to a tractor for providinground bales, comprising: a baling chamber for receiving crops andforming a bale, the baling chamber being supported on a wheel axle; aconveying assembly, configured for imparting a rotating movement to thecrops contained in the baling chamber; a pick-up device, configured forpicking-up the crops from a field; a feeding system, configured forfeeding the crops to the baling chamber; a binder, configured forbinding a formed bale with a fastening element, the binder beingpositioned at a lower height than the baling chamber, with respect to aground surface on which the baler rests, and being configured forguiding the fastening element into the baling chamber along an upwardlytrajectory.
 19. The baler of claim 18, wherein the binder is positionedbetween the feeding system and the wheel axle, along a horizontaldirection parallel to the ground surface.
 20. The baler of claim 19,wherein the binder includes: a binding structure, being tube-shaped andenclosing a fastening element reservoir and having an aperture forreleasing the fastening element; a duckbill, configured to pull thefastening element out of the aperture and feed it to the baling chamber.21. The baler of claim 20, wherein the binding structure is rotatableabout a rotation axis, between a rest position and a working position,wherein, in the rest position of the binding structure, the aperture isin a first position and, in the working position of the bindingstructure, the aperture is in a second position for feeding thefastening element to the baling chamber.
 22. The baler of claim 21,wherein the binder includes a knife attached to the binding structure,configured to intercept and cut the fastening element upon rotating thebinding structure from the working position to the rest position. 23.The baler of claim 20, wherein the binder includes a linkage barsupporting the duckbill and rotatable about a pivoting axis insynchronized fashion with the binding structure, to move the duckbillalong a predetermined path towards the baling chamber.
 24. The baler ofclaim 23, wherein the binder includes an actuator, configured tosimultaneously actuate both a pivoting of the linkage bar about thepivoting axis and a rotation of the binding structure between the restposition and the working position.
 25. The baler of claim 18, whereinthe conveying assembly includes: a belt, partially delimiting the balingchamber; a plurality of belt rollers, supporting and rotating the belt.26. The baler of claim 18, wherein the baling chamber comprises a firstpart, for housing a first amount of crops, and a second part, forhousing a second amount of crops, wherein the conveying assembly isconfigured for imparting a first rotating movement to the first amountof crops, and, at the same time, a second rotating movement to thesecond amount of crops.
 27. The baler of claim 26, wherein the feedingsystem includes a feeding channel having an inlet, for receiving thecrops from the pick-up device, and an outlet, opened to the balingchamber for feeding the crops to the baling chamber, wherein the feedingsystem is movable between a first configuration and a secondconfiguration, wherein, in the first configuration of the feedingsystem, the feeding channel has a first orientation so that the outletof the feeding channel is opened to the first part of the balingchamber, and, in the second configuration of the feeding system, thefeeding channel has a second orientation different from the firstorientation, so that the outlet of the feeding channel is opened to thesecond part of the baling chamber
 28. The baler of claim 26, wherein thebinder is configured for feeding the fastening element to the secondpart of the baling chamber.
 29. The baler of claim 18, comprising atailgate, movable from a closed position and an open position, whereinthe binder is separated from the tailgate, so that the binder remainsstationary during the movement of the tailgate.
 30. A method forproducing round bales in a baler connected to a tractor, comprising thefollowing steps: picking-up crops from a field, through a pick-updevice; feeding the crops to a baling chamber through a feeding system;forming a bale in the baling chamber, by rotating the crops received inthe baling chamber; wherein said rotation is performed by a conveyingassembly; binding a formed bale with a fastening element, through abinder; wherein, in the step of binding, the binder guides the fasteningelement into the baling chamber along an upwardly trajectory from afirst height to a second height, wherein the first height is lower thanthe second height with respect to a ground surface on which the balerrests.
 31. The method of claim 30, wherein the binder includes: abinding structure, being tube-shaped and enclosing a fastening elementreservoir and having an aperture for releasing the fastening element; aduckbill, configured for taking the fastening element out of theaperture and feed it to the baling chamber, wherein the binding stepincludes a rotation of the binding structure about a rotation axis, froma rest position to a working position, and an advancement of theduckbill towards the baling chamber, wherein said rotation of thebinding structure is synchronized with said advancement of the duckbill.32. The method of claim 31, wherein the binding step includes a rotationof the binding structure from the working position to the rest position,wherein in the binding step the binding structure rotates in a positiverotation direction, and in the return step the binding structure rotatesin a negative rotation direction, opposite to the positive rotationdirection, wherein the binder includes a knife attached to the bindingstructure and wherein, upon rotating the binding structure from theworking position to the rest position, the knife intercepts and cuts thefastening element.
 33. The method of claim 31, wherein the binderincludes a linkage bar pivotable about a pivoting axis, wherein thebinding step includes a rotation of the linkage bar about the pivotingaxis to move the duckbill along a predetermined path, towards the balingchamber.
 34. The method of claim 30, wherein the baling chambercomprises a first part, for housing a first amount of crops, and asecond part, for housing a second amount of crops, and wherein theconveying assembly imparts a first rotating movement to the first amountof crops, and, at the same time, a second rotating movement to thesecond amount of crops, and wherein a tailgate is provided, movable froma closed position and an open position, the binder being separated fromthe tailgate, so that the binder remains stationary, during the movementof the tailgate.
 35. A baler connectable to a tractor for providinground bales, comprising: a baling chamber for receiving crops andforming a bale, the baling chamber being supported on a wheel axle; aconveying assembly, configured for imparting a rotating movement to thecrops contained in the baling chamber; a pick-up device, configured forpicking-up the crops from a field; a feeding system, configured forfeeding the crops to the baling chamber; a binder, configured forbinding a formed bale with a fastening element, wherein the balingchamber comprises a first part, for housing a first amount of crops, anda second part, for housing a second amount of crops, and wherein theconveying assembly imparts a first rotating movement to the first amountof crops, and, at the same time, a second rotating movement to thesecond amount of crops, and wherein a tailgate is provided, movable froma closed position and an open position, the binder being separated fromthe tailgate, so that the binder remains stationary, during the movementof the tailgate.
 36. The baler of claim 35, wherein the binder ispositioned at a lower height than the baling chamber, with respect to aground surface on which the baler rests, and is configured for guidingthe fastening element into the baling chamber along an upwardlytrajectory.
 37. The baler of claim 35, wherein the binder is positionedbetween the feeding system and the wheel axle, along a horizontaldirection parallel to the ground surface, and wherein the binderincludes: a binding structure, being tube-shaped and enclosing afastening element reservoir and having an aperture for releasing thefastening element; a duckbill, configured to pull the fastening elementout of the aperture and feed it to the baling chamber.